Node handle (C++17)

Associative containers std::set, std::map, std::multiset, std::multimap, std::unordered_set, std::unordered_map, std::unordered_multiset, std::unordered_multimap are node-based data structures, and their nodes can be extracted as an object of unspecified type known as node handle.

# Declarations

template</* unspecified */>
class /*node-handle*/;

(since C++17) (exposition only*)

# Parameters

• nh: a node handle with the same type (not necessarily the same container)

# Notes

Node handles are move-only, the copy constructor is not defined.